<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<style>
    body {
        text-align: center;
        margin-left: auto;
        margin-right: auto;
        background:linear-gradient(red,yellow,wheat) ;
    }

    #welcome {
        text-align: center;
    }
</style>
<body>
<div id="welcome">
    <h3>欢迎使用 <span th:text="${project}"></span> -toutiao管理系统----</h3>
    <div style="text-align: center; padding: 10px">
        您的验证码为：<strong style="color: blueviolet;" th:text="${numbers}"></strong>
    </div>
</div>
</body>
</html>